Photonic crystal slab (PCS) waveguides can slow down light and even stop light (theoretically) in sub-wavelength dimensions, which can be exploited for enhancing various light-matter interactions for applications in sensing, nonlinear optics and quantum optics [1]}.
Moreover, when integrated with semiconductor quantum dots, PCS waveguides can enable single photons to be produced
with almost 100% on-chip radiative emission [2]}, [3]}, [4]}.
However, a significant problem
for exploiting such waveguides
is that they suffer, in many cases dramatically,
from disorder-induced scattering [5]},
which is particularly severe
in the slow-light regime. This effect is now well understood theoretically and experimentally [6]}, [7]}, [8]}, [9]}, and seems to be a fundamental problem, since the slow-light regime is also the regime for exploiting enhanced light-matter interactions.
